More free lessons at: http://www.khanacademy.org/video?v=X872rmThCF8
Caryatid (South Porch) and Ionic Column (North Porch), Erechtheion on the Acropolis, Athens, marble, 421-407 B.C.E. (British Museum, London); Mnesicles may have been the architect.

Speakers: Dr. Beth Harris and Dr. Steven Zucker

http://www.smarthistory.org/erechtheion-caryatid-and-column.html